Nio's surprise profit alert, soaring trading volume, and long-term growth debate take center stage for investors today, Feb.

・Stock volume measures how many shares change hands over a given time frame. ・High volume typically signals strong liquidity and tighter bid-ask spreads. ・Low volume can lead to wider spreads, sharper ...

Most trading platforms offer alerts. Users get notified when a stock breaks above a technical level or hits a price threshold. But these are reactive signals. They tell users what just happened, not ...